State $\times$ Year Fixed Effects   &   &   \checkmark & \checkmark & \checkmark & \checkmark & \checkmark & \checkmark \\
Geoclimatic Controls   &   &   &   \checkmark & \checkmark & \checkmark & \checkmark & \checkmark \\
Smooth Location Controls   &   &   &   &   \checkmark & \checkmark & \checkmark & \checkmark \\
Agricultural Suitability Controls   &   &   &   &   &   \checkmark & \checkmark & \checkmark \\
Higher Order Controls   &   &   &   &   &   &   \checkmark & \checkmark \\
